feat: 支持模拟器定位与地图 fallback

suixinkan/Features/Location/LocationProvider.swift

@@ -6,7 +6,165 @@
 import CoreLocation
 import Foundation
 
-/// 统一定位服务，封装高德 `AMapLocationManager`，对齐 Android `LocationProvider`。
+/// Core Location 管理器最小接口，便于模拟器定位实现注入测试替身。
+@MainActor
+protocol CoreLocationManaging: AnyObject {
+    var authorizationStatus: CLAuthorizationStatus { get }
+    var desiredAccuracy: CLLocationAccuracy { get set }
+    var delegate: CLLocationManagerDelegate? { get set }
+
+    /// 请求使用期间定位权限。
+    func requestWhenInUseAuthorization()
+    /// 请求一次当前位置。
+    func requestLocation()
+}
+
+extension CLLocationManager: CoreLocationManaging {}
+
+/// Core Location 定位实现，供模拟器运行并支持依赖注入测试。
+@MainActor
+final class CoreLocationProvider: NSObject, LocationProviding, CLLocationManagerDelegate {
+
+    nonisolated static let shared = CoreLocationProvider()
+
+    private var appStore: AppStore = .shared
+    private var manager: any CoreLocationManaging = CLLocationManager()
+    private var geocoder: any LocationAddressGeocoding = LocationGeocoder.shared
+    private var permissionContinuation: CheckedContinuation<Void, Error>?
+    private var locationContinuation: CheckedContinuation<CLLocationCoordinate2D, Error>?
+
+    nonisolated override init() {
+        super.init()
+    }
+
+    /// 使用可控依赖创建 Core Location 定位服务。
+    init(
+        appStore: AppStore,
+        manager: any CoreLocationManaging,
+        geocoder: any LocationAddressGeocoding
+    ) {
+        self.appStore = appStore
+        self.manager = manager
+        self.geocoder = geocoder
+        super.init()
+        manager.delegate = self
+    }
+
+    /// 请求坐标及逆地理编码地址。
+    func requestSnapshot(
+        desiredAccuracy: CLLocationAccuracy = kCLLocationAccuracyBest
+    ) async throws -> HomeLocationSnapshot {
+        let coordinate = try await requestCoordinate(desiredAccuracy: desiredAccuracy)
+        let address = await geocoder.reverseGeocode(
+            latitude: coordinate.latitude,
+            longitude: coordinate.longitude
+        )
+        return HomeLocationSnapshot(
+            latitude: coordinate.latitude,
+            longitude: coordinate.longitude,
+            address: address
+        )
+    }
+
+    /// 请求一次当前位置坐标。
+    func requestCoordinate(
+        desiredAccuracy: CLLocationAccuracy
+    ) async throws -> CLLocationCoordinate2D {
+        try requirePrivacyAgreement()
+        try await ensureLocationPermission()
+        guard locationContinuation == nil else {
+            throw LocationProviderError.locationFailed
+        }
+
+        manager.delegate = self
+        manager.desiredAccuracy = desiredAccuracy
+        return try await withCheckedThrowingContinuation { continuation in
+            locationContinuation = continuation
+            manager.requestLocation()
+        }
+    }
+
+    /// 使用系统服务将坐标解析为地址。
+    func reverseGeocode(latitude: Double, longitude: Double) async -> String {
+        guard appStore.session.privacyAgreementAccepted else { return "" }
+        return await geocoder.reverseGeocode(latitude: latitude, longitude: longitude)
+    }
+
+    /// 请求系统定位权限，等待用户完成首次授权。
+    func ensureLocationPermission() async throws {
+        manager.delegate = self
+        switch manager.authorizationStatus {
+        case .authorizedAlways, .authorizedWhenInUse:
+            return
+        case .denied, .restricted:
+            throw LocationProviderError.permissionDenied
+        case .notDetermined:
+            guard permissionContinuation == nil else {
+                throw LocationProviderError.locationFailed
+            }
+            try await withCheckedThrowingContinuation { continuation in
+                permissionContinuation = continuation
+                manager.requestWhenInUseAuthorization()
+            }
+        @unknown default:
+            throw LocationProviderError.permissionDenied
+        }
+    }
+
+    func locationManagerDidChangeAuthorization(_ manager: CLLocationManager) {
+        resolvePermission(status: self.manager.authorizationStatus)
+    }
+
+    func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
+        guard let continuation = locationContinuation else { return }
+        locationContinuation = nil
+        guard let coordinate = locations.last?.coordinate,
+              CLLocationCoordinate2DIsValid(coordinate),
+              coordinate.latitude != 0 || coordinate.longitude != 0 else {
+            continuation.resume(throwing: LocationProviderError.locationFailed)
+            return
+        }
+        continuation.resume(returning: coordinate)
+    }
+
+    func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
+        guard let continuation = locationContinuation else { return }
+        locationContinuation = nil
+        continuation.resume(throwing: LocationProviderError.locationFailed)
+    }
+
+    private func requirePrivacyAgreement() throws {
+        guard appStore.session.privacyAgreementAccepted else {
+            throw LocationProviderError.privacyNotAccepted
+        }
+    }
+
+    private func resolvePermission(status: CLAuthorizationStatus) {
+        guard let continuation = permissionContinuation else { return }
+        switch status {
+        case .authorizedAlways, .authorizedWhenInUse:
+            permissionContinuation = nil
+            continuation.resume()
+        case .denied, .restricted:
+            permissionContinuation = nil
+            continuation.resume(throwing: LocationProviderError.permissionDenied)
+        case .notDetermined:
+            break
+        @unknown default:
+            permissionContinuation = nil
+            continuation.resume(throwing: LocationProviderError.permissionDenied)
+        }
+    }
+}
+
+#if targetEnvironment(simulator)
+
+/// 模拟器默认定位服务，使用 Core Location 与系统逆地理编码。
+typealias LocationProvider = CoreLocationProvider
+
+#else
+
+/// 真机统一定位服务，封装高德 `AMapLocationManager`，对齐 Android `LocationProvider`。
 @MainActor
 final class LocationProvider: NSObject, LocationProviding {
 
@@ -19,7 +177,7 @@ final class LocationProvider: NSObject, LocationProviding {
         super.init()
     }
 
-    @MainActor
+    /// 请求坐标及高德逆地理编码地址。
     func requestSnapshot(desiredAccuracy: CLLocationAccuracy = kCLLocationAccuracyBest) async throws -> HomeLocationSnapshot {
         try AMapBootstrap.requireConfigured()
         try await ensureLocationPermission()
@@ -51,7 +209,7 @@ final class LocationProvider: NSObject, LocationProviding {
         }
     }
 
-    @MainActor
+    /// 请求一次当前位置坐标。
     func requestCoordinate(desiredAccuracy: CLLocationAccuracy) async throws -> CLLocationCoordinate2D {
         try AMapBootstrap.requireConfigured()
         try await ensureLocationPermission()
@@ -78,7 +236,7 @@ final class LocationProvider: NSObject, LocationProviding {
         }
     }
 
-    @MainActor
+    /// 使用高德服务将坐标解析为地址。
     func reverseGeocode(latitude: Double, longitude: Double) async -> String {
         await geocoder.reverseGeocode(latitude: latitude, longitude: longitude)
     }
@@ -110,3 +268,5 @@ final class LocationProvider: NSObject, LocationProviding {
         return manager
     }
 }
+
+#endif